OBA_2053013 (HCLS1/TRIAP1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of hematopoietic lineage cell-specific protein (human) in blood to amount of TP53-regulated inhibitor of apoptosis 1 (human) in blood. Also known as: the ratio of amount of hematopoietic lineage cell-specific protein (human) in blood to amount of TP53-regulated inhibitor of apoptosis 1 (human) in blood.